Quote: "Darnit, I knew there would be trouble when I made the earth bigger... Gah, oh well. If the moon collides with the earth that could mean even more expansion (due to increased landmass)."
It could also effect the earths solar orbit and the rate at which it rotates and the angle at which it rotates, as well as it could meld with the earth reducing the magnetic field.. to put it shortly, LOTS and LOTS of bad stuff could happen.
EDIT: P.S. also the increased size would reduce earths rotation speed lengthening days, and the increased mass travelling at high velocity would either increase the distance from the sun and break free of solar orbit, or it may start falling towards the sun.
BASIC programmers never die, they GOSUB and don't RETURN.